Warrants and Stock Repurchase - Warrant Activity (Details) - $ / shares shares in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Jul. 01, 2013
Class of Warrant or Right [Roll Forward]
Warrants - Outstanding at beginning of period (in shares)		21,605
Exercised (in shares)		(71)
Repurchased (in shares)	(300)	(8,333)
Warrants - Outstanding at end of period (in shares)	13,201	13,201
Class A
Class of Warrant or Right [Line Items]
Exercise Price (in dollars per share)	$ 11.70	$ 11.70	$ 12.00
Initial term (years)		4 years
Class of Warrant or Right [Roll Forward]
Warrants - Outstanding at beginning of period (in shares)		7,097
Exercised (in shares)		(53)
Repurchased (in shares)		(2,677)
Warrants - Outstanding at end of period (in shares)	4,367	4,367
Class B
Class of Warrant or Right [Line Items]
Exercise Price (in dollars per share)	$ 13.16	$ 13.16	13.50
Initial term (years)		5 years
Class of Warrant or Right [Roll Forward]
Warrants - Outstanding at beginning of period (in shares)		7,254
Exercised (in shares)		(18)
Repurchased (in shares)		(2,828)
Warrants - Outstanding at end of period (in shares)	4,408	4,408
Class C
Class of Warrant or Right [Line Items]
Exercise Price (in dollars per share)	$ 14.63	$ 14.63	$ 15.00
Initial term (years)		6 years
Class of Warrant or Right [Roll Forward]
Warrants - Outstanding at beginning of period (in shares)		7,254
Exercised (in shares)		0
Repurchased (in shares)		(2,828)
Warrants - Outstanding at end of period (in shares)	4,426	4,426